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Contrast Checker
Check color contrast ratios and WCAG accessibility compliance.
Large Text Sample
Normal text sample for readability testing
Small text sample for accessibility
Contrast Ratio
21.00:1
WCAG AA
Normal text
Pass
Large text
Pass
WCAG AAA
Normal text
Pass
Large text
Pass
All data is processed in your browser. Nothing is uploaded to any server.
Contrast Checker — WCAG Accessibility
Check WCAG contrast ratios for accessibility. Ensure your design meets AA and AAA standards.
- ✓100% free, no sign-up required
- ✓Runs entirely in your browser — no file upload to server
- ✓Fast processing with instant results
- ✓Works on desktop and mobile
- ✓Privacy-first: your data never leaves your device
Is this tool really free?
Yes, completely free with no hidden charges, watermarks, or file limits.
Where are my files processed?
All processing happens locally in your browser. Nothing is uploaded to any server.
Do I need to create an account?
No account required. Just open the tool and start using it immediately.